<template>
    <div class="app-container">
  
      <!--查询表单-->
      <el-form :inline="true" class="demo-form-inline">
        <el-form-item>
          <el-input v-model="CourseQuery.title" placeholder="课程名称"/>
        </el-form-item>
  
        <el-form-item>
          <el-select v-model="CourseQuery.status" clearable placeholder="发布状态">
            <el-option value="Normal" label="已发布"/>
            <el-option value="Draft" label="未发布"/>
          </el-select>
        </el-form-item>
  
        <el-button type="primary" icon="el-icon-search" @click="getList()">查询</el-button>
        <el-button type="default" @click="resetData()">清空</el-button>
      </el-form>
      <!-- 表格 -->
      <el-table
        :data="list"
        border
        fit
        highlight-current-row>
  
        <el-table-column
          label="序号"
          width="70"
          align="center">
          <template slot-scope="scope">
            {{ (page - 1) * limit + scope.$index + 1 }}
          </template>
        </el-table-column>
  
        <el-table-column prop="title" label="课程名称" width="245" />
  
        <el-table-column label="课程状态" width="80">
          <template slot-scope="scope">
            {{ scope.row.status==='Normal'?'已发布':'未发布' }}
          </template>
        </el-table-column>
  
        <el-table-column prop="lessonNum" label="总课时" width="100"/>
  
        <el-table-column prop="gmtCreate" label="添加时间" width="160"/>
  
        <el-table-column prop="viewCount" label="浏览数量" width="160" />
  
        <el-table-column label="操作" width="500" align="center">
          <template slot-scope="scope">
            <router-link :to="'/course/info/'+scope.row.id">
              <el-button type="primary" size="mini" icon="el-icon-edit">编辑课程基本信息</el-button>
            </router-link>
            <router-link :to="'/course/chapter/'+scope.row.id">
              <el-button type="primary" size="mini" icon="el-icon-edit">编辑课程大纲信息</el-button>
            </router-link>
            <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeDataById(scope.row.id)">删除</el-button>
          </template>
        </el-table-column>
      </el-table>
  
      <!-- 分页 -->
      <el-pagination
        :current-page="page"
        :page-size="limit"
        :total="total"
        style="padding: 30px 0; text-align: center;"
        layout="total, prev, pager, next, jumper"
        @current-change="getList"
      />
  
  
    </div>
  </template>
  
  <script>
  import course from '@/api/edu/course'
  
  export default {
      data() {
          return {
            list:null,//查询之后接口返回集合
            page:1,//当前页
            limit:5,//每页记录数
            total:0,//总记录数
            CourseQuery:{} //条件封装对象
          }
      },
      created() {
          this.getList()
      },
      methods: {
          //获取课程列表
          getList(page = 1) {
              this.page = page
              course.getCourseListPage(this.page, this.limit, this.CourseQuery)
                  .then(response => {
                      console.log(response)
                      this.list = response.data.rows
                      this.total = response.data.total
                  })
                  .catch(error => {
                      console.log(error)
                  })
          },
          //清空条件查询内容
          resetData() {
              //清空内容
              this.CourseQuery = {}
              //重新查询列表
              this.getList()
          },
          //删除课程
          removeDataById(id) {
              this.$confirm('此操作将永久删除该课程, 是否继续?', '提示', {
              confirmButtonText: '确定',
              cancelButtonText: '取消',
              type: 'warning'
            }).then(() => {
              //发起请求
              course.deleteCourse(id)
                  .then(response => {
                      this.getList((this.total % this.limit == 1 && this.page > 1 ? this.page - 1 : this.page))
                      this.$message({
                      type: 'success',
                      message: '删除成功!'
                    });
                  })
            });
          },
      },
  }
  
  </script>
  